Toktam Zeinali
hakim sabzevari university
[ 1 ] - The preparation of quinoxaline and 2,3-dihydropyrazine derivatives using selectfluor as an efficient and reusable catalyst
Selectfluor [1-(chloro methyl) -4-flouro -1,4-di azonia bicyclo[2,2,2] octane bis (tetraflouro-borate)] catalyzed the preparation of quinoxaline and 2,3-dihydo pyrazine derivatives through one -pot condensation of 1,2-di amines with 1,2-di carbonyls in solvent and under solvent- free conditions. This catalyst is commercially available, inexpensive, reusable, stable to air and moisture, and rela...
[ 2 ] - Henoch-Schonlein purpura (HSP) in a rare novel complicated case: A case report
Introduction: Hcnoch-Schonlein purpura is an IgA mediated small-vessel vasculitis and it is so common in children. The classic term of signs and symbols include polpuble purpura, arthralgia/arthritis, abdominal pain and also renal disease. The incidence of HSP in older age of the entire gastrointestinal tract (gastric, small intestine and large intestine) without arthritis/arthralgia and kidn...